In a nutshell, YES.
From what I've read the 800 will drop a frame here and there during high action scences playing DVDs. The EPIA-M 9000 has hardware DVD decoding and does not drop a single frame. At least on the DVDs I've watched. It's slightly faster and has USB 2.0 and firewire built in. Look at it this way if you were to buy the 800 and a low cost ATI card with DVD decoding you would spend the same amount or more and the case would be bigger to hold the extra video card.
See what other people tell you. I have an EPIA-M 9000 and I love it. Small, DVD decoding, all the bells and whistles, quiet, and very low power reqirements...I got it at idot.com for $158. Good deal if you ask me.